/**
 * CandidateIntakeService — consumes pending candidates and writes ledger entries.
 *
 * Workflow:
 *   1. Validate input
 *   2. Check idempotency (existsForCandidate) — O(1) lookup
 *   3. Load candidate from DB (RuntimeStateManager)
 *   4. Load artifact from DB and parse recommendation
 *   5. Build 11-field LedgerPrincipleEntry
 *   6. Write via adapter.writeProbationEntry()
 *
 * On error: candidate stays `pending`, throws CandidateIntakeError.
 * Idempotent: if adapter already has entry for candidate, returns it (no-op).
 *
 * Non-goals (M7):
 *   - No DB status update to 'consumed' (m7-04 CLI handler does that)
 *   - No promotion to active principle (M8+)
 *   - No pain signal bridge
 */
import type { LedgerAdapter, LedgerPrincipleEntry } from './candidate-intake.js';
import type { RuntimeStateManager } from './store/runtime-state-manager.js';
export interface CandidateIntakeServiceOptions {
    stateManager: RuntimeStateManager;
    ledgerAdapter: LedgerAdapter;
}
export declare class CandidateIntakeService {
    #private;
    constructor(opts: CandidateIntakeServiceOptions);
    /**
     * Consume a pending candidate: load it and its artifact, build a
     * LedgerPrincipleEntry, and write it to the ledger via the adapter.
     *
     * @param candidateId - The candidate ID to intake.
     * @returns The written (or existing) LedgerPrincipleEntry.
     * @throws CandidateIntakeError with code:
     *   - INPUT_INVALID when candidateId is empty/invalid
     *   - CANDIDATE_NOT_FOUND when candidate does not exist
     *   - ARTIFACT_NOT_FOUND when artifact is missing or unreadable
     *   - LEDGER_WRITE_FAILED when ledger write fails
     */
    intake(candidateId: string): Promise<LedgerPrincipleEntry>;
}
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